page_title: Thermometric titration
section_title: Titrations with hypochlorite
hierarchical_section_title: Thermometric titration / Redox titrations / Titrations with hypochlorite
caption_attribution_description: English: Fig. 14. EDTA titration of calcium and magnesium in sea water (author:Lab Rat19410
context_page_description: A thermometric titration is one of a number of instrumental titration techniques where endpoints can be located accurately and precisely without a subjective interpretation on the part of the analyst as to their location. Enthalpy change is arguably the most fundamental and universal property of chemical reactions, so the observation of temperature change is a natural choice in monitoring their progress. It is not a new technique, with possibly the first recognizable thermometric titration method reported early in the 20th century. In spite of its attractive features, and in spite of the considerable research that has been conducted in the field and a large body of applications that have been developed; it has been until now an under-utilized technique in the critical area of industrial process and quality control. Automated potentiometric titration systems have pre-dominated in this area since the 1970s. With the advent of cheap computers able to handle the powerful thermometric titration software, development has now reached the stage where easy to use automated thermometric titration systems can in many cases offer a superior alternative to potentiometric titrimetry.
context_section_description: While relatively unstable and requiring frequent standardization, sodium hypochlorite has been used in a very rapid thermometric titration method for the determination of ammonium ion. This is an alternative to the classical approach of ammonia distillation from basic solution and consequent acid-base titration. The thermometric titration is carried out in bicarbonate solution containing bromide ion (Brown et al., 1969).
caption: Fig. 14. EDTA titration of calcium and magnesium in sea water
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